Method of trajectory optimization for homing antiaircraft missile

To ensure the minimum miss quantity when the radar homing antiaircraft missile encounters target, elements affecting the line of sight(LOS) angular velocity of the missile were analyzed. Two optimization factors including longitudinal acceleration and gravity were obtained by using the conditions of minimum required overload while missile hitting, which could compensate the LOS rotation rate and trajectory curvature. The trajectory optimization by proportional guidance was accomplished. The simulation results show that the method has a significant improvement for the high-altitude and long-distance trajectories. The trajectories become straight. This optimization method is easily realized in engineering.